BioStor
 | A revision of the wood-warbler genus Basileuterus and its allies W E C Todd (1929) Proceedings of The United States National Museum 74: 1-95 |
 | New species and a new combination in Astragalus (Leguminosae) from China L.-R. Xu and D Podlech (2007) Novon 17: 228-254 |